Gas burner with secondary



M xrch 11, 1952 R. POSCHADEL 2,588,759

GAS BURNER WITH SECONDARY AIR SUPPLY Filed Dec. 5, 1947 3 Sheets-Sheet lINVENTOR.

ATTD RN EYE March 11, 1952 R. POSCHADE L 2,588,759

GAS BURNER WITH SECONDARY AIR SUPPLY Filed Dec- 3, 1947 3 Sheets-Sheet 2-54 60 6/ 53 50 I $3 INVENTOR.

Le0220ra 1%scZaa@Z ATTEI RN EYE March 11, 1952 I Filed Dec. 3, 1947 L.R. POSCHADEL GAS BURNER WITH, SECONDARY AIR SUPPLY 5 Sheets-Sheet 5 y k.ZeanardfZHaaiadaZ.

INVENTOR.

BY M

A'ITU RN EYE Patented Mar. 11,1952

GAS BURNER WITH SECONDARY AIR SUPPLY Leonard R. Poschadel, Milwaukee,Wis.

Application December 3, 1947, Serial No. 789,523

1 Claim. 1

This invention relates to burners as used for gas and air mixtures indomestic heating plants, and in particular an improved type of burnerhaving a plurality of peripheral openings or a continuouscircumferential slit around the outer edge wherein the gas flameimpinges directly against the entire inner surface of the boiler orfurnace.

The purpose of this invention is to increase the efficiency of gas andair mixture burning devices by providing a burner head with a continuousfunnel or conical-shaped mixing chamber having a relatively thincontinuous annular discharge orifice that holds the gas fiame producedthereby in direct contact with the inner surface area of a furnace orthe like.

Various types of burners have been provided for oil and gas mixtures butburners for this use usually provide a combustion area at the center andwhere peripheral discharge is provided vanes, tubes, or other confiningdistributing elements are employed. With this thought in mind thisinvention contemplates a burner having a continuous centrally disposedmixing chamber formed between relatively heavy spaced cast iron webswherein the mixture flows equally in all directions so that a smoothcontinuous mixture is discharged for burning.

The object of this invention is, therefore, to form the burner head of agas burner so that a smooth continuous flow of fuel is provided indirect contact with the inner surface of the inner furnace or boilerwall.

Another object of the invention is to provide means in an improvedburner head for gas mixtures having a continuous peripheral orifice forequally distributing and forcibly feeding the mixture to a combustionarea in close proximity to the inner wall of a furnace or boiler.

Another object of the invention is to provide a burner head that isformed of separated sections that may readily be assembled in thefurnace.

Another object of the invention is to provide an improved burner for gasmixtures that may readily be installed in furnaces now in use eitherabove or below the grate.

A further object of the invention is to provide an improved burner forgas mixtures which discharges a smooth continuous film of the mixturedirectly against the inner wall of the furnace which is of a simple andeconomical construction.

With these and other objects and advantages in view the inventionconsists of the new and novel combination, construction, and arrangementof parts as hereinafter more fully described, set forth in the claimsappended hereto, and disclosed in the accompanying drawings, formingpart hereof, wherein:

Figure 1 is a view illustrating a typical installation of the burner ina furnace having a waterjacketed wall and with the burner positionedabove the grate.

Figure 2 illustrates a typical vertical section through the burner head.

Figure 3 shows a plan view of a square burner.

Figure 4 is a detail showing a side elevation of the discharge edge ofthe burner with parts broken away illustrating a modification whereinthe orifice lip is formed with a separate plate or with plates attachedto the flange of the lower member of the burner.

Figure 5 is a detail taken on line 5--5 of Figure 3 showing a sectionthrough an edge of the burner also showing a modification as illustratedin Figure 4.

Figure 6 is a similar section showing a further modification wherein anadjustable orifice plate is used.

Figure '7 is a vertical section through a burner similar to that shownin Figure 2 illustrating a modification wherein the burner head isformed of sections and the sections are bolted together.

Figure 8 is a similar view showing a different method of dividing theburner head into sections.

Figure 9 is a detail showing a modification wherein the baffle islowered to engage the edge of the orifice lip, and the lip is providedwith openings.

Figure 10 is a similar view showing the bafile, base, and orifice lipcast integral.

Referring now to the drawings wherein like reference characters indicatecorresponding parts the burner of this invention, as illustrated inFigures 1 to 8, is formed with a funnel-shaped base ID, a conical-shapedsuperimposed bafile l l, and an orifice plate [2.

In Figure 1 the burner isshown installed in a furnace l3 having innerand outer walls l4 and I5 and in this installation the burner head ismounted above the grate IS with a supply pipe l1 extending through aclinker door [8. The pipe is held by a strap I9 and a block 20 may beused on the grate under the inner end of the pipe to support the burner.On the outer end of the pipe I! is a fitting 2| having a gas supplyconnection 22 and a blower 23 which forces air into the mixing chamberand provides pressure to accelerate the discharge of the fuel mixture. Aplate 24 is provided to close the 3 clinker door opening and the burnermay also be provided with a pilot light 25 with a connection 26.

The base I is provided with a centrally disposed tubular hub 21 in whichthe end of the pipe I! is held by a set screw 28, and at the upper edgeis a peripheral horizontally disposed flange 29 having an orifice lip 39extending up ward from the inner edge thereof. The upper surface of thelip is spaced slightly from the under surface of the baffle H which ismounted on the base by bolts 3| that hold the baflie against bosses 32around openings 33 in the base. The bafile H is also provided withopenings 34 that register with the openings 33 so that secondary air maybe provided to the upper surface of the burner head, and the pilot lightmay also be placed through these openings.

In the design shown in Figure 7 the burner head is formed with a centralfunnel-shaped section 35 having a. hub 35 and a circumferential recess31 and an upper section 38 with a rim 39 and a flange 49, is securedthereto by bolts ll with spacing sleeves 42 which also hold the upperbaffle. In this design the upper balile is formed of two sections 43 and44 with flanges 45 and 45 of the sections held together by bolts 41. Thesection 38 is provided with an upwardly extending rib forming an orificelip 48 providing a slight space 49 through which the gas mixture isdischarged.

In Figure 8 the burner is formed with a center section 50 having a hub51 and an outer section 52 is bolted thereto by bolts 53 through aflange '54. Spacing sleeves 55 are provided on the inner ends of thebolts which support the upper baffle 55, and the upper bafile isprovided with a central section formed in two sections 51' and 58 whichare held together by bolts 59, that also hold a sealing strip 60 thatextends across the joint with the other edge held by bolts 6|. The outeredge of the central section is bolted to the upper bafile 56 by bolts 62as shown. The outer section 52 of the burner is also provided with anorifice lip 63 providing a continuous orifice 64 around the periphery ofthe burner and this section is also provided with a continuoushorizontally disposed flange 65.

In the design shown in Figures 4, 5, and 6, the burner is provided witha plate 66 having an upwardly extending flange 61 which is similar tothe lip 30 shown in Figure 2, and this plate is held by screws 68 to thebase 69- with the upper edge of the flange 6'! spaced slightly from thelower surface of the upper bafile providing a continuous orifice H, andin Figure 6, a. plate 12 with a flange I3 is held to the base ht byscrews through slotted openings 16, thereby providing means. foradjusting the space 11 between the upper edge of the flange and upperbaffle 18.

In the modification illustrated in Figure 9 the upper baffle H18 islowered, so that the lower surface thereof engages the upper edge of theori fice lip I09 of the base H0, and the lip is promixture passes; andin the design shown in Figure 10 the baflie H2 and the base H3 are castintegral with the orifice lip H4 integral with both, and the orifice lipis provided with outlet openings I I5, as shown.

The base and baffle of the burners of the different designs may be castas complete units, or cast in sections as illustrated and described, andwhen cast in sections the sections may be large or small depending uponthe type of furnace or boiler in which the installation is made. Theburner may also be located above or below the grate position or at anysuitable point, and the space between the base and bafile may be changedby the size of the spacing elements, so that the burner is comparativelyadjustable and may be made to suit different conditions.

It will be understood that other modifications may be made in the designand arrangement of the parts without departing from the spirit of theinvention.

What is claimed is:

In a burner for gas mixtures comprising a centrally positionedvertically disposed hub providing means for a fuel connection, wallsinclined upwardly and outwardly from the upper end of said hub, ahorizontally disposed periph eral flange having a continuous upwardlyextended lip at the inner edge thereof extended from the upper edges ofthe walls, said upwardly inclined walls having spacing bosses extendedupwardly from the upper surfaces thereof, said bosses having openingstherethrough and said openings extending through the said walls, abafile having a flat centrally disposed section and also having inclinedupwardly and outwardly extended walls and said walls of the bafiie beingparallel to and spaced from the walls extended from the upper end of thehub, the walls of the said baflle being positioned above the said wallsextended from the upper end of the hub and having openings therethroughpositioned to register with the openings through the bosses therebyproviding communicating means through the walls of the burner, and boltsextended through the walls of the baflie and walls extended upwardlyfrom the upper end of the hub.

LEONARD R. POSCHADEL.

REFERENCES CITED- The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 746,992 Rice Dec. 15, 19031,329,649 Brombacker Feb. 3, 1920 1,404,610 Higgins Jan. 24, 19221,567,830 Blanchard Dec. 29, 1925 1,936,950 Pauloo Nov. 28, 19331,986,311 White Jan.. 1, 1935 2,275,555 Power Mar. 10, 1942 2,485,058McKee Oct. 18, 1949

